It is a quadratic equation that has 2 solutions
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-2x2 + 9x - 12 = 0Then apply the quadratic formula.
Yes
2x2 + 3x - 20 = (x + 4)(2x - 5).
It is, as stated, 2x2 + x - 1 = 0. That is the quadratic form.
Using the quadratic equation formula: x = 1 or x = -10